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tM-TH8
8-channel Isolated Thermistor Input Module with High Voltage Protection
 
     
  • 8-channel Thermistor Input
  • 120 VDC Overvoltage Protection
  • Resolution: 16 bits
  • User-defi ned Thermistor Types
  • 2 kV ESD and 4 kV EFT Protecton
  • Dual Watchdog
  • 2500 VDC Intra-module Isolation
  • Wide Operating Temperature Range: -25 ~ +75°C
   
Model: tM-TH8    
 
The tM-TH8 is an 8-channel isolated thermistor input module that can be used for measuring temperatures via a thermistor. Many types of thermistor are supported and user-defined types can be added by specifying the Steinhart coefficients, if necessary. The added 2500 VDC intra-module isolation and 120 VDC overvoltage protection for the thermistor on the tM-TH8 ensure that the module will operate with higher reliability.
 
  • Industrial Automation
  • Industrial Machinery
  • Building Automation
  • Food and Beverage Systems
  • Semiconductor Fabrication
  • Control Systems
 
Analog Input
Input Channels 8
Types Thermistor
Thermistor Type Precon ST-A3, Fenwell U, YSI L100, YSI L300, YSI L1000, YSI B2252, YSI B3000,
YSI B5000, SI B6000, YSI B10000, YSI H10000, YSI H30000, User-defined
Resolution 16-bit
Sampling Rate 8 Hz total
Accuracy +/-1%
Overvoltage Protection 120 VDC
Open Wire Detection Yes
 
Communication
Interface RS-485
Format (N, 8, 1), (N, 8, 2), (O, 8, 1), (E, 8, 1)
Baud Rate 1200 ~ 115200 bps
Protocol DCON, Modbus/RTU, Modbus/ASCII
Dual Watchdog Yes, Module (2.3 seconds), Communication (Programmable)
LED Indicators
Power 1 LED as Power Indicator
Isolation
Intra-module Isolation, Field-to-Logic 2500 VDC
EMS Protection
ESD (IEC 61000-4-2) 2 kV Contact for Each Terminal
3 kV Air for Random Point
EFT (IEC 61000-4-4) +/-4kV for Power
Power Requirements
Reverse Polarity Protection Yes
Powered from Terminal Block Yes, 10 ~ 30 VDC
Consumption 1 W Max.
Mechanical
Dimensions (W x L x H) 52 mm x 98 mm x 27 mm
Installation DIN-Rail Mounting
Environment
Operating Temperature -25 XC ~ +75 °C
Storage Temperature -30 XC ~ +75 °C
Humidity 10 ~ 95% RH, Non-condensing
 
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